diff --git a/neo/idlib/CMakeLists.txt b/neo/idlib/CMakeLists.txt
index 79232ffe..dc3cfcd4 100644
--- a/neo/idlib/CMakeLists.txt
+++ b/neo/idlib/CMakeLists.txt
@@ -130,6 +130,11 @@ else()
 	SEPARATE_ARGUMENTS(_compiler_FLAGS)
 	
 	if (USE_PRECOMPILED_HEADERS)
+	if(OPTICK)
+		LIST(APPEND _compiler_FLAGS -DUSE_OPTICK=1)
+	else()
+		LIST(APPEND _compiler_FLAGS -DUSE_OPTICK=0)
+	endif()
 	add_custom_target(precomp_header_idlib ALL
 	                  COMMAND ${CMAKE_CXX_COMPILER} ${_compiler_FLAGS} -x c++-header precompiled.h -o precompiled.h.gch
 	                  WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}